Jesse Shared "IMSK Exam 3" - 18 Picmonics
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IMSK Exam 3
Myasthenia Gravis
- Mechanism
- Antibodies to Acetylcholine Receptor
- Symptoms
- Ptosis
- Diplopia
- Weakness with Muscle Use
- Respiratory Death
- Thymus Associated
- Treatment
- Acetylcholinesterase Inhibitors
- Plasmapheresis
- Thymectomy
1 min
Lambert-Eaton Syndrome
- Mechanism
- Autoantibody to the Presynaptic Calcium Channel on Motor Neurons
- Inhibits Acetylcholine (ACh) Release at Neuromuscular Junction
- Paraneoplastic Syndrome
- Small Cell Lung Cancer
- Symptoms
- Proximal Muscle Weakness
- Improves with Muscle Use
- Autonomic Symptoms
- Extraocular Muscle Sparing
2 mins
Hypersensitivity Type I
- Previous Antigen Exposure
- Immediate Reaction
- IgE Cross-linking
- Presensitized Mast Cells
- Histamine Release
- Vasodilation
- Anaphylaxis
- Allergies
- Treatment
- Epinephrine
1 min
Hypersensitivity Type II
- Cytotoxic
- IgM or IgG antibody-mediated
- Membrane Attack Complex (MAC)
- Mechanism
- Opsonization
- Complement Activation
- NK Cells
- Testing
- Direct Coombs test
- Indirect Coombs Test
1 min
Hypersensitivity Type III
- Immune Complex
- Antigen-antibody (IgG) complex activates complement
- Neutrophils release lysozomal enzymes
- Examples
- Arthus Reaction
- Serum Sickness
- Systemic Lupus Erythematosus (SLE)
1 min
Hypersensitivity Type IV
- Delayed-Type Hypersensitivity
- T Cell Mediated
- Antibody Independant
- Macrophages Activated
- Examples
- Transplant Rejection
- PPD Skin Test
- Contact Dermatitis
1 min
Pemphigus Vulgaris
- Pathophysiology
- Autoantibodies against desmosomes
- Symptoms
- Flaccid Bullae on Skin
- Oral Mucosa Involvement
- Intraepidermal Acantholysis
- Fluid Loss
- Infection
- Nikolsky Positive
- Diagnosis
- Biopsy showing Autoantibodies
- Treatment
- IVIG and Plasmapheresis
- Oral Steroids
- Immunosuppressants
2 mins
Muscular Dystrophy
- Mechanism
- X-linked Recessive
- Signs and Symptoms
- Muscle Weakness
- Motor Problems
- Gower Sign
- Large Calves
- Waddling Gait
- Loss of Ambulation
- Consideration
- Cardiac and Respiratory Failure
2 mins
McArdles Disease
- Pathophysiology
- Type V Glycogen Storage Disease
- Muscle Glycogen Phosphorylase Deficiency
- Signs and Symptoms
- Increased Glycogen in Muscle
- Painful Muscle Cramps
- Myoglobinuria
- Normal Lactic Acid
- Treatment
- Vitamin B6
2 mins
Achondroplasia
- Mechanism
- Autosomal Dominant
- Advanced Paternal Age
- Most Common Cause of Dwarfism
- Mutation of FGFR3 (Fibroblast Growth Factor Receptor 3)
- Defective Endochondral Ossification
- Symptoms
- Delayed Motor Milestones
- Shortened Limbs with Normal Axial Skeleton Size
- May Develop Hydrocephalus
- Symptoms of Spinal Stenosis
- Normal Life Span and Fertility
2 mins
Osteogenesis Imperfecta
- Pathophysiology
- Autosomal Dominant
- Decreased Type I Collagen Production
- Symptoms
- Phenotypically Diverse
- Brittle Bone Disease
- Fractures from Minimal Trauma
- Confused with Child Abuse
- Hearing Loss
- Dental Imperfections
- Blue Sclera
1 min
Osteopetrosis (Marble Bone Disease)
- Pathophysiology
- Defective Osteoclast Resorption
- Carbonic Anhydrase II Mutation
- Lack of Acidic Environment
- Symptoms
- Fractures
- Nerve Palsies
- Diagnosis
- Myelophthisic Anemia
- Erlenmeyer Flask Bones
- Normal ALP and PTH
- Normal Calcium and Phosphorus
- Bone-in-bone Appearance
- Treatment
- Bone Marrow Transplant
2 mins
Paget's Disease of Bone
- Pathophysiology
- Men > Age 40
- Increased Osteoblast and Osteoclast activity
- Mosaic Pattern
- Signs and Symptoms
- Increased Skull Diameter
- Hearing Loss
- Fractures
- Bone Ache and Joint Pain
- High Output Heart Failure
- Diagnosis
- Bone Scan
- Normal Parathyroid hormone (PTH) and Calcium
- Elevated ALP
- Treatment
- Bisphosphonate
- Calcitonin
2 mins
Vitamin D Deficiency
- Signs & Symptoms
- Rickets in children
- Bending bones
- Rachitic rosary
- Breast milk has decreased vitamin D
- Osteomalacia in adults
- Tetany from Hypocalcemia
2 mins
Osteosarcoma
- Pathophysiology
- Osteogenic Sarcoma
- Peak incidence men 10-20 years old
- Metaphysis of Long Bones
- Knee Region
- Radiation
- Familial Retinoblastoma
- Paget's Disease
- Diagnosis
- Codman Triangle
- Sunburst Pattern from Elevated Periosteum
- Grave Prognosis
2 mins
Ewing's Sarcoma
- Epidemiology
- Most Common in Boys < 15 years old
- Pathophysiology
- 11;22 Translocation
- Characteristics
- Long bones, Pelvis, Ribs
- Diaphysis
- Small Blue Cells
- Malignant
- Aggressive
- Onion-skin Appearance
- TREATMENT
- Responsive to Chemotherapy
2 mins
Osteoarthritis
- Mechanism
- Articular Cartilage Destruction
- Biomechanical Stress
- Aging
- Signs and Symptoms
- Asymmetric
- Pain Decreases with Rest
- Morning Stiffness Under 30 Minutes
- Crepitus
- DIP and PIP Joints
- Treatment
- Lifestyle Changes
- Acetaminophen or NSAIDs
2 mins
Dermatomes - Lumbosacral
- L2 - Medial Thigh
- L3 - Medial Knee
- L4 - Kneecap, Medial Ankle, and Big Toe
- L5 - Dorsum of Foot
- S1 - Lateral Foot, Posteriolateral Thigh
- S 2, 3, 4, 5 - Perianal and Genitals
2 mins
